A compact dual band-notched UWB circular monopole antenna with parasitic resonators

Ultra‐wideband technology has experienced a rapid growth over the last decade for its contribution in different sectors of human society. Printed antennas are considered as preferred platform for implementing this technology because of its alluring characteristics like light weight, low cost, ease of fabrication, integration capability with other systems, etc. Antennas developed for ultra‐wideband applications are desired to have notch characteristics for avoiding interference with other existing radio communication systems. The techniques related to design and developments of printed band‐notched antennas are continuously upgraded for improving the antenna performance. In this article, a comprehensive review has been carried out on ultra‐wideband antennas with band notch characteristics proposed in around last decade. The band notched UWB antennas available in the literature have broadly been classified into five different categories based on their notch characteristics like single band‐notch, dual band‐notch, triple band‐notch, quad/multiple band‐notch, and reconfigurable/tunable band‐notch, respectively. This review exercise may be helpful for beginners working on ultra‐wideband band‐notched antennas and also such a review process is not available in the open literature to the best of author's knowledge.

Section: Dual Band‐notch Characteristicsmentioning

confidence: 99%

Section: Dual Band‐notch Characteristicsmentioning

confidence: 99%

Section: Dual Band-notch Characteristicsmentioning

confidence: 99%

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A state-of-art review on band-notch characteristics in UWB antennas

Shome

Khan

Laskar

2018

“…Therefore, it is important to filter out these narrow bands from the UWB system. To achieve this, different UWB antennas have been designed by utilizing different geometries for the radiating patch that is, Rectangular, Circular Elliptical, fractal, trapezoidal, or hexagonal . Single notch antennas for narrowband rejection, dual notch characteristics antennas, and tri‐notch UWB antennas have been designed and reported in the literature.…”

Section: Introductionmentioning

confidence: 99%

Design of tri‐notched UWB antenna based on elliptical and circular ring resonators

Rahman

Cao

et al. 2018

This article presents the design of a compact coplanar waveguide (CPW) fed Monopole Antenna for ultra‐wideband (UWB) applications. The semi‐circular shaped radiator is fed with a 50‐Ω line that resonates within the UWB frequency range. Two notching elements are used to reduce narrowband interferences. An elliptical ring resonator is etched out from the radiator to suppress 3.97‐4.48 GHz narrowband interference whereas, narrow bands from 5.79 to 6.57 GHz (WLAN) and 7.30‐7.60 GHz (X band downlink) were suppressed by loading a metamaterial inspired circular ring resonator behind the feed line. Moreover, the lower notching band due to the elliptical ring resonator can be further tuned to lower resonance frequencies by controlling the capacitance of the embedded varactor diode. The antenna has a compact size of 36 × 34 × 1 mm3. The antenna is simulated, fabricated and measured in an Anechoic Chamber. The measured results are in good agreement with the simulated results.

“…The antenna is providing operating frequency from 2.5‐15 GHz. A low‐profile wideband antenna is designed for dual band notch characteristics in . The antenna operates from 3.3‐11 GHz and notch band properties are attained by placing a rectangular slot on the feed line.…”

Section: Introductionmentioning

confidence: 99%

Circular ring structured ultra-wideband antenna for wearable applications

Nadh

Madhav

Kumar

et al. 2018

This article explores the design and analysis of a novel ultra‐wideband (UWB) antenna for body‐centric applications. The designed antenna consists of circular ring structured radiating element with 24 spokes, which resembles the shape of Ashoka chakra (Indian National flag emblem). The antenna placed on the semi flexible RT/Duroid 5880 with dielectric constant of 2.2 and occupying the dimension of 30 × 25 × 0.8 mm3. The present design aims at optimizing the antenna structure to cater UWB operating spectrum (3.1‐10.6 GHz) with a novel patch shape, which looks like the Ashoka chakra. The proposed antenna is analyzed by placing on three‐layered human phantom model and examined on head, arm at three of its operating frequencies. The maximum specific absorption rate (SAR) is found to be 1.23 W/kg and 1.29 W/kg when computed at arm and head of the human body respectively. The SAR values are observed under those conditions are satisfying the international safety standards such as FCC & IEEE C95.1:2005 & ICNIPR. Analysis of system savant (ANSYS Savant) radiation performance characteristics are also studied by placing the proposed antenna on virtual human body environment.